<template>
    <div class="login_container">
        <div class="login_box">
            <div class="avatar_box">
                <img src="@/assets/logo.png" alt="">
            </div>
            <!-- 登录表单 -->
            <el-form ref="loginFormRef" label-width="80px" :model="loginForm" :rules="loginFromRules" class="login_form">
                <el-form-item label="用户名：" prop="username">
                    <el-input v-model="loginForm.username" prefix-icon="el-icon-user" >
                    </el-input>
                </el-form-item>

                <el-form-item label="密码：" prop="password">
                    <el-input v-model="loginForm.password" type="password" prefix-icon="el-icon-lock">
                    </el-input>
                </el-form-item>

                <el-form-item class="btns">
                    <el-button type="primary" @click="login">登录</el-button>
                    <el-button type="info" @click="resetLoginForm">重置</el-button>
                </el-form-item>
            </el-form>
        </div>
    </div>
</template>

<script>

export default {
    name: '',
    data() {
        return {
            // 登录表单的数据对象
            loginForm:{
                username:'admin',
                password:'123456',
            },
            // 表单的验证规则
            loginFromRules:{
                username:[
                    {required: true, message:'请输入用户名',trigger:'blur'},],
                password:[
                    {required: true, message:'请输入密码',trigger:'blur'},]
            }
        };
    },
    methods:{
        // 点击重置按钮，重置表单
        resetLoginForm(){
            this.$refs.loginFormRef.resetFields();
        },
        login(){
            this.$refs.loginFormRef.validate(async valid => {
                if(!valid) return;
                const {data: res} = await this.$http.post('login',this.loginForm);
                if(res.meta.status !== 200) return this.$message.error('用户名或密码错误')
                this.$message.success('登录成功');
                // 登陆成功之后保存token到sessionStorage中
                window.sessionStorage.setItem('token',res.data.token);
                // 页面跳转
                this.$router.push('/home');
            });
        }
    }

}

</script>
<style lang="less" scoped>
.login_container {
    background-color: aquamarine;
    height: 100%;
}

.login_box {
    width: 450px;
    height: 300px;
    background-color: aliceblue;
    border-radius: 10px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);

    .avatar_box {
        height: 130px;
        width: 130px;
        background-color: aliceblue;
        border: 1px solid #eee;
        border-radius: 50%;
        box-shadow: 0 0 10px #eee;
        padding: 10px;
        position: absolute;
        left: 50%;
        transform: translate(-50%, -50%);

        img {
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background-color: #eee;
        }
    }
    .login_form{
        position: absolute;
        bottom: 0;
        padding-left: 20px;
        box-sizing: border-box;
    }

    .btns{
        width: 370px;
        text-align: center;
    }
}
</style>